Cartridge.



P. BUTLER.

CARTRIDGE.

APPLICATION FILED JAN. 15. 1914.

1,153,860. PatentedSept.14, 1915.

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rAuL BUTLER,

CARTRIDGE COMPANY, A

0F LOWELL, MASSACHUSETTS, ASSIGNOR T0 UNITED STATES CORPORATION OFMASSACHUSETTS.

CARTRIDGE.

Specification of LettersPatent.

Patented Sept. 14, 1915.

T 0 aZZ whom it may concern Be it known that 1, PAUL BUTLER, a citizenof the United States, residing in Lowell, in the county of Middlesex andState of lifassachusetts, have invented an Improvement in Qartridges, ofwhich the following description, in connection with the accompanyingdrawing, is a specification, like numerals on the drawing representinglike parts.

The present invention relates to a cartridge, and is embodied in what iscommonly known as a paper cartridge, the purpose of the invention beingto make the cartridge more nearly water-proof than has been possibleheretofore. Tn loaded cartridges of this type, the outer wad whichconfines the charge of shot is held in position by crimping in the outerend of the paper tube. While the material of which the paper tube ismade can be satisfactorily water-proofed so far as relates to itssurfaces, it is practically impossible to protect adequately the cut endof the tube with water-proof material, so that after the shell has beenloaded and the cartridge completed, the said end, though forced tightlyinto contact with the surface of the wad is capable of absorbingmoisture which gradually permeates the fiber between the surfaces of thetube, causing the same to swell and become distorted. This swelling ordistortion, though slight, is apt to be suflicient to prevent he readyinsertion of the cartridge into the chamber of the gun, thus renderingthe cartridge practically useless.

The application of water-proofing material at the point of contactbetween the bent over end of the tube and the surface of the wad hasbeen found to be inefficient as an expedient for overcoming the trouble,in view of the fact that it is not durable enough to answer the purpose.Furthermore, any water-proofing material which can be used for thispurpose, such, for example, as parafiin, is liable to become chipped andbroken out, leaving the cartridge in its original exposed condition.

In accordance with the present invention, I provide the loaded cartridgewith a relatively thin disk of paper, fiber, or like material, which isinserted in the muzzle end of the cartridge, between the surface of theshot-confining wad and the outer end of the cup, after the latter hasbeen turned over or crimped to retain the wad in position.

The drawing is an elevation of a cartridge embodying the invention, themuzzle end thereof being broken away and shown in longitudinal section.

The cartridge embodying the invention consists of the metallic cup 1 andthe paper tube 2 the invention pertaining to a loaded cartridge asherein shown. Ihe charge of powder, confined by one or more wads in theusual way, is not herein shown, the charge of shot 3, however, beingindicated as contained in the cartridge near the muzzle end thereof andconfined as usual by the wad at held in position by the crimped in outerend 5 of the paper tube 2. Owing to the fibrous nature of the materialfrom which the tube is made, it is practically impossible to protect theexposed edge of the tube where it has been cut to the right lengthandthe fiber may become more or less displaced or loosened when the end ofthe tube is turned over in the crimping process. There is, therefore, anopportunity for moisture to creep in between the end of the tube and thesurface of the wad; and owing to capillary attraction, the material islikely to absorb moisture enough to cause swelling or distortion.

In order to protect the exposed edge of the tube, 1 provide thecartridge, in accordance with my invention, with a washer 6 which fitsclosely in the end of the cartridge beyond the wad 4, the said washerbeing frictionally held in position by contact with the sides of theturned-in tube 2. In order to prevent undue back pressure against theshot at the time of discharge, I have shown the washer 6 as flexed inthe middle so that the circumference of said washer while having a firmbearing against the bent in end of the paper tube does not extend farenough in to prevent the said bent end from straightening readily torelease the wad & in response to the pressure of the gases. By formingthe washer in this way it can be held in place with a sufficientfrictional hold to make a moisture proof end without materiallyincreasing the back pressure and thereby injuring the efiiciency of thecartridge.

What I claim is: outer Wad the said disk being concave-com A papercartridge comprising a metallic vex in shape. breech-cup and a papertube, the said car- In testimony whereof, I have signed my tridgecontaining a charge confined therein name to this specification in thepresence of 5 by a Wad held in position by the inturned tWo subscribingWitnesses.

edge of the paper tube at the muzzle end of the cartridge; combined Witha relatively PAUL BUTLER thin disk of water-proofed paper slightlyWitnesses: larger in diameter than the cavity at the C. E. HOME,

10 muzzle end of the cartridge beyond the H. A. SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. 0;

